8MM FORUM WORLDWIDE • View topic - How To Replace A Worm Gear

8MM-16MM FORUM WORLDWIDE

The International Forum for 8mm, 16mm, and 9.5mm film
Dedicated To Collectors Around The World
It is currently Mon Nov 20, 2017 7:31 am

All times are UTC - 5 hours [ DST ]

Click on any of the boxes below to link to a new page



Screening Rooms    Ebay Film Sellers    Film/Equipment Sellers    Laurel and Hardy    Magnetic Striping


Our mission is to provide a "free" forum for all members. This forum will not delete, lock up, or edit any posts. On this forum, you are "free" to question any statement that is not understood, and debate any differences you have with another member. We only moderate when a member will not back up his accusations. There are no condescending attitudes from the Administrator or the Moderator. You will be treated with respect. Dan Lail, Admin. and Chris Smith, Moderator



Post new topic Reply to topic  [ 8 posts ] 
Author Message
 Post subject: How To Replace A Worm Gear
PostPosted: Sun Feb 03, 2013 11:40 am 
Offline
Site Admin
User avatar

Joined: Tue Apr 26, 2011 4:51 pm
Posts: 1940
Location: Loganville, Ga.
I have atempted replacing a worm gear before, but the alignment of the gears was wrong when I reinstalled the new one. i understand there is a "jig" used for holding the gears in place so this misalignment will not happen. Some people have successfully replaced the gears without the Jig. Anyone know how this is done?

With the "Mechanical Assembly" removed from the B&H 1500 or 2500 series you see two large gears to either side of the worm gear. Couldn't these two gears be held into place and the worm gear lifted out and a new reinstalled?

_________________
And now For Our Feature Presentation.

http://www.metroxpressjazz.com/index.html


Top
 Profile Send private message  
 
 Post subject: Re: How To Replace A Worm Gear
PostPosted: Sun Feb 03, 2013 4:03 pm 
Offline
Film Expert

Joined: Thu Jun 02, 2011 7:15 pm
Posts: 107
Location: Flint Michigan
Greetings Dan

See your other post on who can

RC

_________________
RC's Classic Collections 16mm
Parts & Service
http://www.rcsclassic16mm.com/


Top
 Profile Send private message  
 
 Post subject: Re: How To Replace A Worm Gear
PostPosted: Sun Feb 10, 2013 11:40 pm 
Offline
Site Admin
User avatar

Joined: Tue Apr 26, 2011 4:51 pm
Posts: 1940
Location: Loganville, Ga.
Thanks, Richard. I will check it out.

_________________
And now For Our Feature Presentation.

http://www.metroxpressjazz.com/index.html


Top
 Profile Send private message  
 
 Post subject: Re: How To Replace A Worm Gear
PostPosted: Fri Apr 17, 2015 7:39 am 
Offline
Film Expert

Joined: Tue Apr 14, 2015 4:09 am
Posts: 130
Location: Oxfordshire
Did you replace your worm gear satisfactorily Dan. I had mine replaced a few months ago by Kevin Brown, in Nottingham, England. He still has a supply of animated wormgears. He told me that some of the wormgears you see for sale are out by 10,000th of an inch. This may not sound much; but according to Kevin, the projector will show a 20 minute film without any problems, but when you get to showing a 1600ft reel, the projector can seize up as the worm expands.

I saw someone on Ebay selling a projector where they had fitted the wormgear themselves; they supplied a short video of it in action, and the sound fluttered.

This was the wormgear out of my Bell & Howell 655D
Attachment:
PICT0098.JPG
PICT0098.JPG [ 128.24 KiB | Viewed 2462 times ]
Attachment:
PICT0097.JPG
PICT0097.JPG [ 191.15 KiB | Viewed 2462 times ]


Top
 Profile Send private message  
 
 Post subject: Re: How To Replace A Worm Gear
PostPosted: Fri May 08, 2015 12:21 pm 
Offline
Film Expert
User avatar

Joined: Wed Apr 02, 2014 2:42 am
Posts: 50
Location: Olympia, Washington
To properly time the sprockets, you need Bell & Howell tool part number S-552-1-N1 "Sprocket Timing and Alignment Plate". There are two versions of it floating around out there. The earlier version is completely retangular and requires you to use toothpicks dobbed with red model paint or nail polish to mark the sprocket. Then you look through little peep holes to see which way to move a particular sprocket to be in time with the other one.

The new version (which is the best, IMO) has angled ends and you can directly view which sprocket is out of time without needing to use toothpicks and paint. I like this version. This one makes it very easy to time the sprockets. This is a gage for viewing the timing of the sprockets. It does not hold them in place.


Attachments:
File comment: New version (better) is angled.
S-552-1-N1 NEW resized.jpg
S-552-1-N1 NEW resized.jpg [ 15.82 KiB | Viewed 2380 times ]
File comment: Old version is a rectangle.
S-552-1-N1 OLD resized.jpg
S-552-1-N1 OLD resized.jpg [ 16.52 KiB | Viewed 2380 times ]
Top
 Profile Send private message  
 
 Post subject: Re: How To Replace A Worm Gear
PostPosted: Mon Jul 20, 2015 10:30 am 
Offline
Film Expert

Joined: Mon Jul 20, 2015 4:15 am
Posts: 6
Location: Tilburg/Netherlands
Hey Guys,
If someone needs a B&H worm gears (500 to 2500 Series) you can order them here
http://shop.van-eck.net/projector-parts/p-1a/PP-0051.html (43,50€)
Thijs


Top
 Profile Send private message  
 
 Post subject: Re: How To Replace A Worm Gear
PostPosted: Tue Sep 15, 2015 10:21 pm 
Offline
Film Expert
User avatar

Joined: Wed Apr 02, 2014 2:42 am
Posts: 50
Location: Olympia, Washington
Here's a step-by-step video showing how to replace the worm gear yourself:

https://www.youtube.com/watch?v=znCTbFE2bgI


Top
 Profile Send private message  
 
 Post subject: Re: How To Replace A Worm Gear
PostPosted: Wed Sep 16, 2015 7:15 pm 
Offline
Film Expert
User avatar

Joined: Thu Dec 29, 2011 10:45 am
Posts: 151
Location: Michigan
That video is great! Thanks for the link.


Top
 Profile Send private message  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 8 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group